Refractory Concretes from Waste of Kovdor Mining and Processing Plant by Magnesium Phosphate Cement

This work is aimed at using the technogenic raw materials of Kovdorsky GOK for production refractory materials. Currently, many researchers are engaged in development technologies unshaped The most demanded among them concrete. They able to set and harden low temperatures with formation structures that retain their characteristics when heated. In our work, concretes were obtained from a briquette based on forsterite concentrate waste GOK. Magnesium phosphate cement was used as binder. As result research, grain composition charge selected, ratio filler binder improve structural properties concrete found, effects temperature heat treatment physical technical shown. Concretes have following characteristics: bulk density 2170-2260 kg / m3, strength up 50 MPa (at 25°C), volume change after 450-1000°C 1-2%. Recovering by manufacture will lead qualitatively new use non-renewable natural resources, reduce rate depletion mineral subsoil, eliminate sources environmental pollution restore land occupied waste.